As the nation enters into an official state of mourning following the passing of Queen Elizabeth II, King Charles III takes up the role of monarch.
The Queen's eldest son addressed the nation tonight in a touching tribute to his late mother. The King said: "To my darling Mama, as you begin your last great journey to join my dear late Papa, I want simply to say this: thank you.
READ MORE - The Queen's corgis 'will be looked after by her children' after her death
"Thank you for your love and devotion to our family and to the family of nations you have served so diligently all these years.
"May 'flights of Angels sing thee to thy rest'."
There will be several changes across the country due to the Queen's death, including a new Royal cypher, reports iNews. But what is a cypher, and why do monarchs have them?
Here is all you need to know.
What does ER stand for in the Queen's title?
ER, or EIIR, is the Queen’s royal cypher. The ER stands for Elizabeth Regina, “Regina” meaning queen in Latin.
The II in the Queen's name is also to signify that she is the second Elizabeth to take the throne. However, in Scotland the II is not used as the nation did not recognise the first Elizabeth.
This was due to Scotland being ruled by Mary, Queen of Scots instead. The Queen’s EIIR features on traditional police helmets and post boxes.
Sign up for Edinburgh Live newsletters for more headlines straight to your inbox
What royal cypher will King Charles take?
Charles will use the cypher CIIIR, standing for Charles III Rex. “Rex” means king in Latin.
It has also been confirmed that King Charles will rule as Charles III. He could have went by one of his three middle names instead - Philip, Arthur or George - but chose to go by his birth name.
While English queens use the St Edward’s crown, or a variant of it, on their cypher, kings traditionally use the more rounded Tudor crown.
You can find all of the latest information following the death of Her Majesty here.
READ NEXT:
Queen Elizabeth II: Edinburgh Council close major roads as monarch to arrive in capital
Queen Elizabeth II in Edinburgh: 22 amazing photos show Her Majesty's many visits down the years
Hearts, Hibs and rest of SPFL games postponed in mark of respect to Queen Elizabeth II
When Queen's body will arrive in Edinburgh from Balmoral as procession planned
Edinburgh closures and cancellations following the death of Queen Elizabeth II
